The EB2 Backup by SureFire is a slender, compact dual-output flashlight that features a virtually indestructible LED emitter and a precision Total Internal Reflection (TIR) lens that create a high-intensity beam optimized for both reach and situational awareness. The 500-lumen maximum output is great for identifying potential threats and overwhelming their vision, and the 5-lumen low-output setting is perfect for reading a map or navigating in low light. The EB2 Backup features a Mil-Spec hard-anodized aluminum body and a two-way clip, and it is O-ring and gasket-sealed for weatherproofing. This model is available with a click-type switch or a tactical switch. Output time 500 lumens - 2.25 hours, 5 lumens - 67 hours